| 摘要 |
This system gives the following effects 1; To increase surface effected by woofer three times more than actual surface. 2; To reduce 60-70% of movement of cone in the low frequency b and to lessen the intermodulation distortion and Doppler distortion. 3; To reduce 6-10dB of harmonic distortion. 4; To increase 6-12dB of efficiency of speaker system. 5; To increase frequency band from 2KHz to 6KHz.
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